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Catalytic particle electrode used for removing refractory organics and ammonia nitrogen from wastewater and preparation method and application thereof

A technology of refractory organic matter and particle electrodes, which is applied in the field of catalytic particle electrodes and its preparation, can solve the problems of particle electrodes without too much consideration, difficult to remove at the same time, single treatment target, etc., achieve stable treatment effect and increase service life , high catalytic efficiency

Active Publication Date: 2015-09-23
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these catalytic particle electrodes are still insufficient in the mineralization of refractory organic matter (that is, degrading organic matter into inorganic matter), and the treatment target is relatively single. It can only remove refractory organic matter or ammonia nitrogen in wastewater alone, and it is difficult to remove both at the same time. , while the energy consumption is still relatively high, and in the preparation of the catalytic particle electrode, the nature of the particle electrode itself as a carrier has not been considered too much

Method used

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  • Catalytic particle electrode used for removing refractory organics and ammonia nitrogen from wastewater and preparation method and application thereof
  • Catalytic particle electrode used for removing refractory organics and ammonia nitrogen from wastewater and preparation method and application thereof
  • Catalytic particle electrode used for removing refractory organics and ammonia nitrogen from wastewater and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The catalytic particle electrode material of this example includes nutshell activated carbon with a diameter of 2 to 3 mm and an active metal component. The content of the metal component is 2.5 wt% of the total mass of the activated carbon. The preparation method includes the following steps:

[0031] Take a certain amount of husk activated carbon with a diameter of 2 to 3 mm, wash it with deionized water repeatedly until the pH is around 7, and dry it at 80 ℃ for 6 hours, and then soak the husk activated carbon in 1.5 times the volume of 1mol / L dilute In nitric acid solution, boiled for 25 minutes, then washed with deionized water until the pH value was about 7, then ultrasonically cleaned for 25 minutes, and dried at 103°C for 4 hours. Then the modified nutshell activated carbon is immersed in an equal volume of 0.5mol / L metal salt solution (the mole percentage of each metal active component is: cobalt 50%, iron 40%, manganese 5%, Nickel is 5%, and the total mole percen...

Embodiment 2

[0034] The catalytic particle electrode material of this example includes nutshell activated carbon with a diameter of 4 to 5 mm and an active metal component. The content of the metal component is 1.9 wt% of the total mass of the activated carbon. The preparation method includes the following steps:

[0035] Take a certain amount of husk activated carbon with a diameter of 4~5mm, wash it with deionized water repeatedly until the pH value is around 7, and dry it at 60℃ for 8h, and then soak the husk activated carbon in 1.5 times the volume of 1mol / L dilute In a nitric acid solution, boiled for 20 minutes, then washed with deionized water until the pH value was about 7, then ultrasonically washed for 25 minutes, and dried at 103°C for 5 hours. Then the modified nutshell activated carbon is immersed in an equal volume of 0.5mol / L metal salt solution (the mole percentage of each metal active component is: cobalt 55%, iron 35%, manganese 5%, Nickel is 5%, and the total mole percentag...

Embodiment 3

[0038] The catalytic particle electrode material of this example includes nutshell activated carbon with a diameter of 1 to 3 mm and an active metal component. The content of the metal component is 1.6 wt% of the total mass of the activated carbon. The preparation method includes the following steps:

[0039] Take a certain amount of nutshell activated carbon with a diameter of 1~3mm, wash it with deionized water repeatedly until the pH value is around 7, and dry it at 80℃ for 8h, and then soak the nutshell activated carbon in 2.5 times the volume of 1mol / L dilute In a nitric acid solution, boiled for 30 minutes, then washed with deionized water until the pH value was about 7, then ultrasonically cleaned for 30 minutes, and dried at 103°C for 4 hours. Then the modified nutshell activated carbon is immersed in an equal volume of 0.4mol / L metal salt solution (the mole percentage of each metal active component is: 60% cobalt, 30% iron, 5% manganese, Nickel is 5%, and the total mole ...

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Abstract

The invention relates to the field of wastewater treatment, in particular to a catalytic particle electrode used for synchronously removing refractory organics and ammonia nitrogen from wastewater and a preparation method and application thereof. The electrode comprises shell activated carbon and metal components loaded on the shell activated carbon, wherein the particle size of the shell activated carbon is 1mm-5 mm, and the content of the metal components is 0.8wt%-2.5wt% the total mass of the activated carbon. Packing of the catalytic particle electrode has the advantages of being high in catalytic activity, low in price, easy to obtain, simple in preparation, high in COD and ammonia nitrogen degradation and removal efficiency, high in produced water mineralization degree, low in unit COD energy consumption and capable of being used continuously. Accordingly, the electrode is suitable for treatment of wastewater which is difficult to degrade biologically and contains high-concentration organic pollutants and high ammonia nitrogen.

Description

Technical field [0001] The invention relates to the field of sewage and wastewater treatment, in particular to a catalytic particle electrode for simultaneous removal of refractory organic matter and ammonia nitrogen in sewage and a preparation method and application thereof. Background technique [0002] The waste water produced in the pesticide, printing and dyeing, chemical, pharmaceutical and other industries and landfill sites are mostly refractory organic waste water. These waste water usually contain high concentrations of biologically toxic and stable organic pollutants, which are treated by conventional biological methods. Later, there are still some refractory organics that cannot be degraded and removed, making the discharge of wastewater fail to meet the requirements. [0003] As a kind of advanced oxidation technology, electrochemical oxidation technology has the advantages of being able to be carried out at room temperature, occupying a small area, easy to realize aut...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/467
Inventor 梁文艳李飞贞邹元龙
Owner BEIJING FORESTRY UNIVERSITY
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